113811559 has 4 divisors (see below), whose sum is σ = 114170904. Its totient is φ = 113452216.

The previous prime is 113811557. The next prime is 113811589. The reversal of 113811559 is 955118311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 955118311 = 7 ⋅136445473.

It is a cyclic number.

It is not a de Polignac number, because 113811559 - 2¹ = 113811557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113811557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179197 + ... + 179830.

It is an arithmetic number, because the mean of its divisors is an integer number (28542726).

Almost surely, 2^113811559 is an apocalyptic number.

113811559 is a deficient number, since it is larger than the sum of its proper divisors (359345).

113811559 is an equidigital number, since it uses as much as digits as its factorization.

113811559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359344.

The product of its digits is 5400, while the sum is 34.

The square root of 113811559 is about 10668.2500439388. The cubic root of 113811559 is about 484.6134433597.

The spelling of 113811559 in words is "one hundred thirteen million, eight hundred eleven thousand, five hundred fifty-nine".